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NetTek ® BTS Antenna and
Transmission Line Analyzer
YBA250
Features & Benefits
Improve Quality of Service
Through Preventative Maintenance
Activities on Antennas, Before
they Become Service-affecting
Quickly Analyze the Most
Important Antenna and
Transmission Line Problems
Easy-to-Use Distance-to-Fault
(DTF) Measurements for Locating
Antenna and Transmission
Line Trouble
Advanced Calibration Technique
Speeds and Simplifies Your
Measurements by Allowing a
Single Calibration for Use Across
Entire Frequency Range
Modular Instrument for Handheld
NetTek® Y400, Which Allows
for Easy Future Expansion for
New Functions
Applications
Affordable, Portable, Ready for the Field
Antenna and transmission
line analyzer for wireless
communications systems
The Tektronix NetTek Analyzer is a revolutionary portable BTS field tool. The YBA250
test module tailors this system for fast
identification of base station antenna and
transmission line trouble, and easy location of those faults. The YBA250 test
module offers this capability at a surprisingly low price, in a rugged, easy-to-use
package, suitable for all field environments.
Return Loss/VSWR
The YBA250 antenna test module allows
you to quickly analyze the system using
either Return Loss or VSWR. Comparisons
against initial conformance tests enable
Return Loss/VSWR/Cable Loss
Measurements for Antenna and
Transmission Line Analysis
Distance-to-Fault (DTF)
Measurements for
Locating Problems
Maintenance and
Installation Checks
Insertion Gain/Insertion
Loss Measurements
users to easily identify degradation in
system performance. Viewing the
frequency response vs. channel tables
for various standards provides easier
interpretation of how the problem may
be affecting performance.
NetTek® BTS Antenna and Transmission Line Analyzer
YBA250
Advanced Calibration
By using Tektronix’ expert factory calibration program, the YBA250 speeds up
and simplifies the troubleshooting process.
By enabling users to reference a single
calibration across the entire frequency
range, we have eliminated antiquated
calibration procedures each time the
frequency or display range is changed.
Cable Loss
Cable loss can be measured using a
simple, single port technique. This makes
use of the Cable Loss feature of the
YBA250. This feature allows measuring
cable loss while connected to only one end
of the cable. This is useful when access
to the other end of the cable is difficult.
Distance-to-Fault (DTF)
The YBA250 test module helps locate
antenna and transmission line faults quickly
and easily. Using the Distance-to-Fault
(DTF) capability, users are able to identify
problem areas and their location. The
YBA250’s interface provides access to
multiple cable types and easier setup of
DTF parameters for faster troubleshooting.
2
CW Mode
The YBAS250 can be used as a sine
wave, or continuous wave (CW) source.
This is useful for many different trouble
shooting applications.
Easy to Use
The NetTek® BTS field tool is based around
the familiar Windows CE operating system.
As a result, users will spend less time
learning the instrument and more time
troubleshooting the network. The YBA250
test module puts measurement functions
just a point of the finger away. Furthermore,
built-in help guides speed the measurement process.
Common measurements have been
optimized for quick, repeatable results.
For example, novice users can display
Distance-to-Fault results with straightforward
Windows-like zoom and resize controls.
To further minimize troubleshooting time
and improve effectiveness, users can
control the YBA250’s accuracy and resolution to optimize measurement results.
For easier interpretation of these results,
the YBA250 also enables user-defined
masks to qualify antenna performance.
This provides faster analysis and allows
users to share masks and results.
Wireless Field Test • www.tektronix.com/wireless
Insertion Loss and Insertion Gain
System and RF component performance
can be easily analyzed with the two port
insertion loss or insertion gain capability of
the YBA250, when used in combination
with a YBT250. This capability allows
measurements of cable, connector and
attenuator loss. It also allows measurements of filters, duplexers, RF path gain,
amplifiers, antenna isolation and many
other general-purpose RF measurements.
The Insertion Loss and/or Insertion Gain
capability also allows measurements of
Tower Mounted Amplifiers (TMAs, or
receiver preamplifiers) while the TMA is
still on the tower. Caution: Please check
your country’s laws regarding transmitters
before using the NetTek to transmit a
test signal.
NetTek® BTS Antenna and Transmission Line Analyzer
YBA250
Characteristics
YBA250 Antenna
and Transmission Line
Analyzer Module
Operation Modes –
Return Loss/VSWR/Cable Loss.
Distance-to-Fault (DTF).
Measurement Characteristics
Return Loss/VSWR –
Range:
Resolution:
Return Loss – 0.01 dB.
VSWR – 0.01.
The Modules and the Platform
The Tektronix NetTek® Y400 analyzer
platform is required for using NetTek
modules and cards. The Y400 platform
includes the display, power supply, CPU
and battery compartments. Modules
such as the YBA250 can then be
attached to the back. Several types of
modules can be attached at once. A
variety of modules and options allows
you to tailor the instrument to service
the standards and interfaces for use in
your network.
The modular design also means that
the instrument can easily be upgraded.
New measurements or standards can
be added with software upgrades or
with additional modules.
Temperature –
Operating: 0 ºC to 50 ºC.
Nonoperating: –40 ºC to +60 ºC.
Altitude –
Operating: Up to 15,000 ft. (4,550 m).
Nonoperating: Up to 50,000 ft. (12,192 m).
Humidity – 5% to 95% up to 30 ºC.
Calibration – 1-year cycle.
Warranty – 1 year.
Physical Characteristics
Return Loss – 0.00 to 54.00 dB.
VSWR – 1.00 to 65.00.
Y400 platform combined with test modules.
General Characteristics
Accuracy:
Factory Calibration –
≤1.2 dB, typical (from 0 ºC to 40 ºC up to
2.5 GHz, measuring a 17 dB return loss).
User Calibration –
<0.05 + |20 log (1±10[(RLrel)/20])| dB, typical.
Where RLrel is the measured return loss value
minus the calibration return loss value. Return
loss measurement accuracy is dependent on the
quality of the calibration standards used. Tektronix
recommends the use of a YBAC1 calibration kit
or equivalent.
CW Mode –
The YBA250 can be used as a sine wave or
continuous wave (CW) source, which is useful for
many different troubleshooting applications.
Distance-To-Fault (DTF) –
Vertical Range:
Return Loss – 0.00 to 54.00 dB.
VSWR – 1.00 to 65.00.
Distance Range: 0 to 1486*Vrel m. Where Vrel is
the signal velocity in the line with respect to the
speed of light.
Resolution: ≤6.1*Vrel cm at a distance of
200 meters, across frequency range up to 2.5 GHz.
Accuracy: Timing accuracy is equal to ±75 ppm.
Distance accuracy varies with uncertainty in the
velocity of propagation of the measured cable, along
with the uncertainty of the timing accuracy.
Inputs/Outputs –
Frequency Range: 25 MHz to 2.5 GHz.
Signal Source Setting: +3 dBm, –20 dBm,
–30 dBm, –40 dBm, –50 dBm, –60 dBm.
Input Level: +20 dBm (maximum safe input).
Interference Immunity: +11 dBm.
RF Connector: 50 Ω, type N.
Insertion Loss/Insertion Gain*1 –
Frequency Range: 30 MHz to 2.5 GHz.
Signal Source settings +3 dBm, –20 dBm,
–30 dBm, –40 dBm, –50 dBm, –60 dBm.
Accuracy (Typical):
YBA250
Dimensions
Height
Width
Depth
Weight
Net
mm
187
241
32
kg
1.0
in.
7.375
9.5
1.25
lbs.
2.2
YBAC1 Calibration Kit
General Characteristics
Precision Open –
Connector: Type N.
Frequency Range: 0.1 to 18.0 GHz.
Phase Accuracy: ±2.0 degrees.
Reflection Coefficient: 0.99 (minimum).
Precision Short –
Connector: Type N.
Frequency Range: DC to 18.0 GHz.
Precision Load –
Connector: Type N.
Impedance: 50 Ω (nominal).
Frequency Range: DC to 18.0 GHz.
VSWR: 1.02 – From DC to 2.5 GHz.
Calibration – 1-year cycle.
Warranty – 1 year.
Weight – 1.1 lb (0.5 kg).
YBAC2 Normalization Kit
General Characteristics
Connectors – Type N.
Impedance – 50 Ω nominal.
Frequency Range – DC to 2.5 GHz.
VSWR – Below 1.15 (typical).
User Normalization.
1.0 dB when VSWR of device being tested is below 1.5.
0.5 dB when cable VSWR is below 1.15.
Valid when YBAC2 Normalization kit (or equivalent)
is used.
Resolution: 0.01 dBm
*1
A YBT250 is required for Insertion Loss or Insertion
Gain measurements.
Wireless Field Test • www.tektronix.com/wireless
3
NetTek® BTS Antenna and Transmission Line Analyzer
YBA250
Ordering Information
YBA250
Module without platform. NetTek® Y400 analyzer
platform is required for using NetTek modules
and cards.
Options
Service
Opt. C3 – Calibration service 3 years.
Opt. C5 – Calibration service 5 years.
Opt. D1 – Calibration data report.
Opt. D3 – Calibration data report 3 years
(with Opt. C3).
Opt. D5 – Calibration data report 5 years
(with Opt. C5).
Opt. R3 – Repair service 3 years.
Opt. R5 – Repair service 5 years.
Suggested YBA250 Test
Module Accessories
YBAC1 – Calibration kit.
Precision Cable – Order 012-1619-00.
“N” Male to BNC Female Adapter –
Order 103-0045-00.
Barrel “N” Female – Order 103-0429-00.
Type N Male to Type N Male Adapter –
Order 103-0430-00.
7-16(F) to N(F) Adapter – Order 103-0431-00.
7-16(M) to N(F) Adapter – Order 103-0432-00.
YBAC2 – Normalization kit.
YBAC1
Calibration kit for YBA250.
Options
Service
Opt. R3 – Repair service 3 years.
Opt. R5 – Repair service 5 years.
Suggested YBAC1 Calibration
Kit Accessories
Precision Cable – Order 012-1619-00.
“N” Male to BNC Female Adapter –
Order 103-0045-00.
Barrel “N” Female – Order 103-0429-00.
Type N Male to Type N Male Adapter –
Order 103-0430-00.
7-16(F) to N(F) Adapter – Order 103-0431-00.
7-16(M) to N(F) Adapter – Order 103-0432-00.
YBAC2
Normalization kit for YBA250.
Includes: Two barrel connectors, two 6-foot
cables and two 10 dB attenuators.
Suggested Insertion Loss/
Insertion Gain Accessories
Bias Tee Power Supply –
12 VDC 4.1 A OUT, 90 to 254 VAC (UL, CSA).
Order 119-7017-00.
Bias Tee Power Supply Adapter –
Order 012-1686-00.
Bias Tee –
2.5 to 6000 MHz, N type RF Connectors.
Order 015-0718-00.
YBT1
Circuit tester.
PC Card without platform. NetTek Y400 analyzer
platform is required for using NetTek modules
and cards.
Includes: YBT1 PC Card, User Manual, Software
CD-ROM, RJ48CT1 Dongle, Loopback Plug,
RJ48C-to-Bantam Y Cable.
Contact Tektronix:
ASEAN / Australasia / Pakistan (65) 6356 3900
Austria +41 52 675 3777
Balkan, Israel, South Africa and other
ISE Countries +41 52 675 3777
Belgium 07 81 60166
Brazil & South America 55 (11) 3741-8360
Canada 1 (800) 661-5625
Central East Europe, Ukraine and Baltics +41 52 675 3777
Central Europe & Greece +41 52 675 3777
Denmark 80 88 1401
Finland +41 52 675 3777
France & North Africa +33 (0) 1 69 81 81
Germany +49 (221) 94 77 400
Hong Kong (852) 2585-6688
Tektronix (India) Private Limited (91) 80-22275577
Italy +39 (02) 25086 1
Japan 81(3)6714-3010
Luxembourg +44 (0) 1344 392400
Mexico, Central America & Caribbean 52 (55) 56666-333
Middle East, Asia and North Africa +41 52 675 3777
The Netherlands 090 02 02797
Norway 800 16098
People’s Republic of China 86 (10) 6235 1230
Poland +41 52 675 3777
Portugal 80 08 12370
Republic of Korea 82 (2) 528-5299
Russia, CIS & The Baltics 7 095 775 1064
South Africa +27 11 254 8360
Spain (+34) 901 988 054
Sweden 020 08 80371
Switzerland +41 52 675 3777
Taiwan 886 (2) 2722-9622
United Kingdom & Eire +44 (0) 1344 392400
USA 1 (800) 426-2200
USA (Export Sales) 1 (503) 627-1916
For other areas contact Tektronix, Inc. at: 1 (503) 627-7111
Last Updated 1 November, 2004
Our most up-to-date product information is available at:
www.tektronix.com
Product(s) are manufactured
in ISO registered facilities.
Copyright © 2004, Tektronix, Inc. All rights reserved. Tektronix products are
covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material. Specification and price
change privileges reserved. TEKTRONIX and TEK are registered trademarks of
Tektronix, Inc. All other trade names referenced are the service marks, trademarks or registered trademarks of their respective companies.
12/04
HB/WOW
2GW-15543-2